强激光与粒子束2018，Vol.30Issue(1)：159-163,5.DOI:10.11884/HPLPB201830.170199
水下Co-60源切伦科夫辐射的蒙卡模拟
Monte Carlo simulation of Cherenkov light generated by underwater Co-60 source
刘斌 1吕焕文 1李兰 1唐松乾1
作者信息
- 1. 中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213
- 折叠
摘要
Abstract
With wide application of nuclear techniques,accidents of lost radioactive sources increase.The airborne gamma spectrometer can be used for searching the lost radiation sources on the ground level.However,for radioactive sources lost in water,the use of gamma spectrometer is limited as a result of the shielding of gamma rays by water.So detection of underwater radioactive source based on Cherenkov light generated by the radioactive source is becoming important.With applications of combined simulation of Geant4 and MCNP,and continuation simulation method in Geant4,distributions and transmission of Cherenkov light generated by underwater Co-60 sealed source were simulated.The simulation reveals that wavelength of Cherenkov light is between 300～600 nm through transmission in water.The light intensity becomes stronger from the edge to the center,and the distribution range approximately equals to the depth of the radioactive source in water.The light flux is about 100 Cherenkov photons · cm-2 after 300 m transmission in water.The Cherenkov light can be detected by the characteristics of its wavelength spectrum and intensity distribution.关键词
放射源丢失/切伦科夫辐射/MCNP耦合Geant4计算/Geant4接续计算/光学测量Key words
lost radioactive source/Cherenkov radiation/combined simulation of MCNP and Geant4/continuation simulation in Geant4/optical detection分类
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刘斌,吕焕文,李兰,唐松乾..水下Co-60源切伦科夫辐射的蒙卡模拟[J].强激光与粒子束,2018,30(1):159-163,5.
